Principal Engineer
Location
london, london
Job Type
Full-time
Category
Information Technology
Posted
June 08, 2026
Principal Engineer - Series A Scale Up - Up to £270,000
All potential candidates should read through the following details of this job with care before making an application.
I'm currently looking for a Principal Engineer to join a high-growth, YC-backed AI startup based in London.
All potential candidates should read through the following details of this job with care before making an application.
It's a hands-on IC role focused primarily on scalable backend systems and genuinely at scale.
You’ll be working directly with the Head of Engineering and CTO/Co-Founder — your impact will be visible and felt from day one. They’re looking for someone who has taken companies from Series A through to Series C on multiple occasions ; someone who has walked into complex, high-pressure environments, diagnosed the problems, fixed them, and unlocked the next phase of growth. This is about scaling products, not just teams.
Working Arrangements: 3 days per week in Central London office
Why it might interest you- YC-backed and scalin...